Clay County Fair 2025 Iowa. Spencer, iowa — over the nine days of the 2025 clay county fair, powered by smu, the fair once again welcomed. Spencer, iowa — advance gate tickets for the 2025 clay county fair, powered by smu, are on sale now, just in time for the holidays.

2025 clay county fair by the numbers. The branding iron was completely stripped down and renovated by the clay county cattleman’s association.